You don't have permission to access /The African Canadian Heritage Association is an African Heritage and language program operating out of a new location at Centennial College Progress Campus (at Markham Rd. and Hwy 401).The ACHA program features African history lessons, arts and crafts, special events for students, who range in age from 5 to 16 years of age.Classes run from September to June. Most notable ACHA special events include : the Youth Retreat (for children 11 Years and older ). Entrepeneur's Day and the Black History Challenge. on this server.